Could someone explain to me why this GG image has Streets of Rage graphics and data at the end? I opened it with a rom graphic viewer, and around offset h26C07, I can read "Axel" and "Blaze"; and at h34E8F,

all in Game Gear format graphics. And doing a quick scan shows the script for SOR1 starting at h3616C. There are credits hidden in there but they're for SOR1.

Edit:
I thought Frogger had the full version of SOR1, but removing all data that pertained to Frogger [up until the end graphics] broke the game. Maybe it's a misdump by Buddha, or maybe the cart was like that when whoever got it, got it.

Nothing special, really. The data is just leftovers from whatever game was previously burned to the cart. It's been confirmed that the Sonic 2 prototype contains old data from a multitude of previous builds, along with some graphics and palettes from Chiki Chiki Boys.